Eur. Phys. J. D 61, 431-435 (2011)
https://doi.org/10.1140/epjd/e2010-10523-2

Macroscopic quantum control of exact many-body coherent states

Department of physics and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, 410081, Changsha, P.R. China

Corresponding author: ^a whhai2005@yahoo.com.cn

Received: 24 February 2010
Revised: 18 September 2010
Published online: 17 December 2010

Abstract

We demonstrate that the idea of quantum control can be generalized to construct the exact many-body coherent state (MBCS) in a trapped Bose-Einstein condensate (BEC) of N atoms. Such a MBCS possesses the form of the single-particle coherent state, which does not deform in propagation and is stable for a repulsive BEC. The results suggest an experimental scheme for resonantly generating and coherently controlling the MBCSs.